diff --git a/README.md b/README.md
index 3f74e3e..a8a6c9e 100644
--- a/README.md
+++ b/README.md
@@ -10,10 +10,10 @@ cargo run --package=egui-circles                               # build & run
 
 # HowTo
 
-## ImGui
+### ImGui
 
 Detailed information on how to use [egui](https://github.com/emilk/egui) rust library can found [here](https://egui.info/).
 
-## Math
+### Math
 
 A simple explanation of [2D vector math](https://gitea.djmil.dev/djmil/egui-circles/wiki/raw/Collisions2D.pdf), silently working behind the scene of the collisions simulation.